arrow_back
search
close

TROJ_BUZUS.BJJ

October 08, 2012
 Analysis by: jasperm
 ALIASES:

Microsoft: TrojanDownloader:Win32/Buzus.C; Kaspersky: Trojan-Downloader.Win32.Small.bavh; Mcafee: Downloader-BIJ

 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW


This Trojan may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

36,864 bytes

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

29 Nov 2010

Payload:

Downloads files

Arrival Details

This Trojan may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

However, as of this writing, the said sites are inaccessible.

Installation

This Trojan injects threads into the following normal process(es):

  • SVCHOST.EXE

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • {BLOCKED}ic.osa.pl

It saves the files it downloads using the following names:

  • %User Temp%\{6 random characters}.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.660.06

VSAPI PATTERN Date:

29 Nov 2010

VSAPI PATTERN Date:

11/29/2010 12:00:00 AM

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_BUZUS.BJJ. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


Did this description help? Tell us how we did.